What should I wear to travel to San Francisco in September?

Average temperature in San Francisco in September 13℃~23℃. The average temperature during the day is 23℃. It is recommended to wear cool and breathable clothes, such as shirts, thin long skirts and thin T-shirts made of cotton and linen. The average temperature at night is 65438 03℃. It is recommended to wear warm clothes such as suits, jackets, coats, suits and thin sweaters. The cities with the highest daily average temperature in San Francisco in September are Abilene (30℃), Akron (23℃), Albany (23℃) and Albuquerque (28℃). The cities with the lowest daily average temperature in San Francisco in September are Abilene (18℃), Akron (12℃), Albany (10℃) and Albuquerque (13℃).